Occasionally I see users download or sign up with fake@fake.com or something along those lines. We won't spam you or send you promotions. On average we have sent 3-5 emails per year. Also, starting in 2017 we will be ending our mailchimp list and relying on gumroad to send out update information. Between now and January 2017, it may be possible for you to receive an email twice if you are on both lists.